When I started working with trackers and affiliate programs, I constantly encountered the term postback URL, but I didn't fully understand how it worked in practice. While setting up campaigns, I found an explanation at https://roiads.co/blog/glossary/what-is-a-postback-url/ — it describes in simple terms how conversion information is transferred between the affiliate program and the tracker. This helped me set up tracking correctly and see real results without losing data. After that, campaign optimization became much more accurate and understandable.